172115514 has 48 divisors (see below), whose sum is σ = 398834280. Its totient is φ = 53452800.

The previous prime is 172115513. The next prime is 172115519. The reversal of 172115514 is 415511271.

It can be written as a sum of positive squares in 4 ways, for example, as 169442289 + 2673225 = 13017^2 + 1635^2 .

It is not an unprimeable number, because it can be changed into a prime (172115513) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 28122 + ... + 33690.

Almost surely, 2^172115514 is an apocalyptic number.

It is a practical number, because each smaller number is the sum of distinct divisors of 172115514, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (199417140).

172115514 is an abundant number, since it is smaller than the sum of its proper divisors (226718766).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

172115514 is a wasteful number, since it uses less digits than its factorization.

172115514 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 5695 (or 5692 counting only the distinct ones).

The product of its digits is 1400, while the sum is 27.

The square root of 172115514 is about 13119.2802394034. The cubic root of 172115514 is about 556.2542464179.

Adding to 172115514 its reverse (415511271), we get a palindrome (587626785).

The spelling of 172115514 in words is "one hundred seventy-two million, one hundred fifteen thousand, five hundred fourteen".